pellets

Hi one and all here is my question to you .ive converted my stealth to a .20 anshutz barrel and im now trying to find a good pellet ive tried one of pellpax sample packs of 9 different brands only one the baracudas group well but its 21.14g and im only shooting 12ft lbs does anyone state side use .20 and if so what pellets are availiable over the pond ? 🙄